Condition Analysis
AI-powered assessment using site data and 14-day weather history
Five consecutive dry days following 6.1mm of rain on August 9th, with warm temperatures (up to 28.8°C) and moderate winds from favourable directions, have provided adequate drying time even for this sheltered venue. Conditions today should be dry, but rain returns from August 17th so the window is closing.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and partial tree cover significantly slow drying compared to the exposed hilltop at Bowden Doors proper — always add at least a day to standard drying estimates.
- The large roof problems and overhanging sections can weep from seepage above after heavy rain, and the 30.3mm event on July 26th may still contribute residual moisture to deep seepage lines even now.
- The west-facing aspect receives afternoon and evening sun only, which is helpful in summer but means mornings can feel damp — visit in the afternoon for the driest conditions.
- Check for seasonal bird nesting restrictions before visiting, as the crag is part of an SSSI with potential restrictions through the breeding season.
Warnings
1
- Rain is forecast from August 17th (3.4mm) through August 19th — conditions will deteriorate and climbing should cease until adequate drying resumes.
Reasoning
The last significant rain was 6.1mm on August 9th — five full dry days with temperatures reaching 26–29°C and moderate SW/S/W winds should have thoroughly dried even this sheltered sandstone outcrop from that event.
Five dry days with warm temperatures (17–29°C), humidity averaging 73%, and moderate westerly winds directly hitting this W-facing crag provide strong drying conditions that comfortably exceed the 48–72 hour guideline for moderate rain at a sheltered site.
With five days of drying in warm summer conditions, internal moisture from the 6.1mm event should be fully dissipated and the rock should be at full structural strength; the earlier 30.3mm event on July 26th is now 19 days past and poses no structural concern.
Mid-August offers near-optimal drying conditions with long daylight hours, warm temperatures, and no freeze-thaw risk, though the recent pattern of intermittent showers throughout late July and early August has kept cumulative moisture levels higher than an ideal dry spell.
Contributing Factors
6
Five full days without rain since the 6.1mm on August 9th comfortably exceeds the minimum 48-hour guideline for moderate rainfall.
Temperatures reaching 26–29°C over recent days have strongly accelerated evaporation from the rock.
Prevailing W and SW winds at 15–40 km/h blow directly onto this west-facing crag, enhancing surface drying despite the sheltered valley position.
The sheltered wooded setting reduces airflow at the rock face and slows drying compared to exposed crags, requiring extra caution.
51.5mm over the past 28 days means the surrounding ground and deeper rock may retain more moisture than typical for summer.
Average humidity of 73% over the past week is moderate — not ideal for rapid drying but adequate given the warm temperatures and wind.
Recommendations
3
- Climb this afternoon when the west-facing crag receives direct sun and warmth for the best conditions.
- Inspect the roof problems and overhangs carefully for any residual seepage from above before committing — weep lines can persist even when surrounding rock is dry.
- Plan to climb today or tomorrow (August 15th) as rain is forecast from August 17th, which will reset drying conditions.
Previous Analyses
Marginal — Assess Conditions
72%
2 days ago
Four consecutive dry days with warm temperatures (up to 28°C today) and moderate winds have followed the last significant rain of 6.1mm on August 9th, which should be sufficient drying time for a light-moderate shower in summer conditions. However, the sheltered valley position and higher humidity average (73%) introduce enough uncertainty that a visual check on arrival is strongly recommended before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Back Bowden Doors sits in a sheltered wooded valley that dries significantly slower than the exposed hilltop of Bowden Doors proper — add at least an extra day to normal drying estimates.
- The powerful roof problems and overhanging sections can weep from above for days after rain as water percolates through the caprock, even when vertical faces appear dry.
- The recent wet period (51.5mm in 28 days including a 30.3mm event on July 26th) means deeper rock moisture levels may be elevated despite the surface appearing dry.
- Seasonal bird nesting restrictions may still apply in August — check the BMC RAD for current status before visiting.
Warnings
2
- Do not climb if any seepage is visible on the roof problems — Fell Sandstone loses up to 50% of its compressive strength when wet, risking permanent hold breakage.
- Check BMC RAD for any active bird nesting restrictions before visiting.
Reasoning
The last meaningful rain was 6.1mm on August 9th, four days ago, and the rock has had four consecutive dry days with temperatures reaching 21–28°C, but the sheltered valley position and average humidity of 73% mean internal moisture may still linger in deeper pores.
Four days of drying with warm temperatures and moderate westerly winds (which directly hit this west-facing crag) should have cleared surface moisture from the August 9th rain, though the sheltered wooded setting reduces airflow at the rock face and slows evaporation compared to exposed crags.
The cumulative 51.5mm over 28 days (including a heavy 30.3mm event on July 26th) means the sandstone has been repeatedly wetted this summer, and while current surface conditions are likely acceptable, deeper internal moisture could still weaken iron oxide cemented holds on the most porous sections.
Mid-summer conditions with long days and warm temperatures are the most favourable for drying Fell Sandstone, and there is no freeze-thaw risk at current temperatures.
Contributing Factors
7
No rain since August 9th (6.1mm), giving four full days of drying which meets the minimum 48-hour guideline for moderate rain in good conditions.
Temperatures have reached 17–28°C over the drying period, with today hitting 28°C, significantly accelerating evaporation rates.
The wooded sheltered valley reduces effective wind speed at the rock face, slowing drying compared to exposed crags despite moderate ambient wind readings.
Average humidity of 73% over the last week limits the rate of evaporative drying, particularly in the sheltered microclimate of the valley.
Recent prevailing westerly winds blow directly onto the west-facing crag, aiding surface drying despite the sheltered setting.
51.5mm over 28 days including a heavy 30.3mm event on July 26th means deeper rock saturation may persist even as the surface dries.
Small amounts of rain (0.6–1.3mm) are forecast from August 16th, which could re-moisten the surface but are too light to cause deep saturation.
Recommendations
3
- Visually inspect the rock on arrival — check the base of the crag for damp soil and feel the rock surface in shaded recesses before climbing.
- Avoid the roof problems and overhanging sections first; check these for active seepage from above, as water percolating through the caprock can persist for days after rain.
- If any holds feel cool and clammy to the touch, or if chalked holds show moisture rings, do not climb — the interior is still wet despite surface dryness.
Marginal — Assess Conditions
55%
3 days ago
The last significant rain was 6.1mm on August 9th, giving roughly two and a half dry days of drying in warm summer conditions, but the sheltered valley position, high recent humidity, and a trace of rain today (0.3mm forecast this evening) introduce uncertainty. Climbers should visually inspect the rock — especially the roofs and lower sections — before committing to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Back Bowden Doors sits in a sheltered, partly wooded valley that significantly slows airflow and drying compared to the exposed hilltop of Bowden Doors proper — add at least a day to normal drying estimates.
- The powerful roof problems are known to weep from above after rain as water percolates through horizontal breaks; these seepage lines can persist for days even when vertical faces appear dry.
- The crag is west-facing, receiving only afternoon and evening sun, which limits the daily solar drying window — combined with the sheltered aspect, interior moisture can linger.
- Seasonal bird nesting restrictions may be in effect during summer — check BMC RAD for current closures before visiting.
Warnings
2
- Do not climb on any visibly damp or weeping sections — Fell Sandstone loses significant strength at very low moisture levels and hold breakage is a real risk.
- The evening shower forecast around 18:00 today will re-wet surfaces; plan to finish climbing before then if conditions are acceptable earlier in the afternoon.
Reasoning
The 6.1mm rain on August 9th was moderate, and although there have been ~2.5 dry days since, the sheltered valley position and average humidity of 76% over the past week mean internal moisture likely persists in the more porous sections and around seepage lines.
Warm temperatures (17–25°C) and moderate westerly winds have aided surface drying, but the sheltered, partly wooded setting substantially reduces effective airflow at the rock face, and the west aspect limits direct solar heating to afternoon hours only.
With only 2.5 days of drying since 6.1mm of rain in a sheltered setting, internal pore moisture may still be sufficient to reduce compressive strength — particularly in the iron-oxide-cemented small holds that characterise the harder routes.
Mid-summer temperatures and longer daylight hours are favourable for drying, but the recent pattern of repeated small rain events (Aug 3, 4, 5, 6, 9, and today) has kept the rock in a cycle of partial re-wetting that prevents full dry-out.
Contributing Factors
7
Multiple small rain events on Aug 3, 4, 5, 6, and 9 have repeatedly re-wetted the rock before it could fully dry, maintaining elevated internal moisture levels.
Temperatures of 17–25°C over the drying period provide good evaporative potential at the rock surface.
The wooded, sheltered valley dramatically reduces wind-assisted drying compared to exposed hilltop crags, adding significant drying time.
The west-facing orientation receives direct sun only in the afternoon and evening, reducing total solar drying hours compared to a south-facing crag.
Prevailing southwesterly and southerly winds at 15–23 km/h are reasonably helpful, though the sheltered valley setting reduces their effectiveness at the rock face.
The 7-day average humidity of 76% slows net evaporation from the rock surface, particularly overnight when humidity rises further.
A light shower forecast around 18:00 today will lightly re-wet surfaces, resetting any progress made during the warm afternoon.
Recommendations
3
- Visually inspect the rock carefully before climbing — check the base of the crag for damp ground and feel holds on the lower sections; if either is moist, do not climb.
- Avoid the roof problems and any routes with known seepage lines, as these will retain moisture longest after the recent repeated rain events.
- If conditions look marginal today, consider waiting until August 14th or 15th when a longer dry spell with lower humidity should allow more thorough drying.
Do Not Climb
45%
5 days ago
Only one full dry day has elapsed since 6.1mm of rain on August 9th, and the sheltered valley position of Back Bowden Doors significantly slows drying — the rock is very likely still damp internally despite potentially appearing dry on the surface. The preceding weeks have also been notably wet (51.5mm in 28 days), meaning background moisture levels in the porous Fell Sandstone will be elevated.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and surrounding woodland drastically reduce airflow and direct sun exposure, meaning drying times here are substantially longer than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems and overhanging sections are known to weep from above after rain — even if vertical faces feel dry, seepage through the caprock can persist for days.
- The west-facing aspect only receives afternoon and evening sun, which combined with the sheltered setting means drying is slow and uneven across the crag.
- Cumulative rainfall has been significant over the past month (51.5mm in 28 days with multiple rain events), keeping background saturation levels in this porous sandstone elevated.
Warnings
2
- Climbing on insufficiently dried Fell Sandstone causes permanent, irreversible damage to holds — the iron oxide features that define these routes cannot be repaired.
- The surface may appear dry while internal moisture remains dangerously high; do not rely on visual or touch assessment alone after only one dry day.
Reasoning
With 6.1mm falling on August 9th and only one dry day since, combined with earlier rain events on August 4th (6.6mm), 6th (2.6mm), and the heavy 30.3mm on July 26th, the porous Fell Sandstone at this sheltered site is almost certainly still holding significant internal moisture.
One day of drying with moderate westerly wind (~16 km/h) and high humidity (79%) is wholly insufficient for a sheltered valley crag after 6mm of rain — the guideline minimum is 48 hours even in good drying conditions, and conditions here are far from optimal.
The iron oxide holds characteristic of Fell Sandstone are at meaningful risk of breakage given that the rock likely retains well above the 1% saturation threshold at which significant strength loss begins.
Summer temperatures (mid-teens °C) are helpful but the persistently high humidity (79% average over the past week) and sheltered aspect substantially offset the seasonal drying advantage.
Contributing Factors
7
6.1mm fell on August 9th — only one full dry day has passed, far short of the 48-hour minimum needed even in favourable conditions.
The wooded, sheltered setting drastically reduces wind exposure at the rock face, meaning effective drying is much slower than weather station wind data suggests.
Average humidity of 79% over the past week significantly impedes evaporation from the rock surface.
51.5mm over the past 28 days with multiple rain events keeps background saturation elevated in this porous sandstone.
Temperatures in the mid-to-high teens provide reasonable evaporative potential, though this is offset by humidity and shelter.
The west-facing aspect means today's westerly wind (~16 km/h) reaches the crag face directly, aiding surface drying to some degree.
The signature roof problems at Back Bowden are known to weep from above after rain, and one day is insufficient for this seepage to clear.
Recommendations
3
- Do not climb today — one day of drying after 6mm of rain in this sheltered setting is clearly insufficient for porous Fell Sandstone.
- Wait until at least August 12th (three full dry days) before visiting, and even then check the base of the crag for residual moisture and inspect roof sections for seepage.
- If the forecast light rain on August 14–15th materialises, reset the drying clock and allow at least another 48 hours before climbing.
Do Not Climb
70%
5 days ago
Today received 3.5mm of rain, and the past week has seen multiple rain events totalling 13.4mm, leaving zero consecutive dry days. Given Back Bowden Doors' sheltered valley position and high humidity (~80% average), the porous Fell Sandstone will need at least 48 hours of dry weather before it can be considered safe to climb.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley setting and partial tree cover significantly reduce airflow across the rock, meaning drying times here are substantially longer than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems and overhanging features are known to weep from above after rain, and capillary seepage through the sandstone can persist for days even when vertical faces appear dry.
- The recent pattern of intermittent rain events (6.6mm on Aug 4, 2.6mm on Aug 6, 3.5mm today) means the rock has not had a sustained drying window and internal saturation is likely elevated.
- Seasonal bird nesting restrictions may still be in effect in early August — check the BMC RAD for current status before visiting.
Warnings
2
- Do not climb on Fell Sandstone that appears surface-dry but has had fewer than 48 hours of dry weather — internal moisture causes hold breakage and permanent route damage.
- The roof problems are particularly prone to seepage from above; weeping may persist for days after the last rain event.
Reasoning
With 3.5mm of rain today on top of 13.4mm over the past week and no consecutive dry days, the sandstone is almost certainly saturated internally despite any surface drying between showers.
The west-facing aspect receives only evening sun, and the sheltered valley position limits wind exposure — even with moderate westerly winds at 16.9 km/h, effective drying at the rock face will be poor, requiring at least 48 hours of dry weather from today's rain.
Repeated wetting from multiple rain events over recent weeks means internal moisture levels are likely high, posing significant risk of hold breakage and grain loosening on the iron oxide-cemented features that characterise Fell Sandstone.
Mid-summer temperatures (~16–21°C) are helpful for evaporation, but the persistently high humidity (80% average over 7 days) substantially offsets this advantage.
Contributing Factors
6
Today's 3.5mm of rain resets the drying clock entirely, ensuring zero consecutive dry days heading into the forecast period.
Multiple rain events over the past two weeks (30.3mm on Jul 26, 6.6mm on Aug 4, 2.6mm on Aug 6) mean the rock has had no sustained drying window and internal moisture is cumulative.
The wooded, sheltered valley dramatically reduces wind-driven evaporation compared to exposed crags, extending drying times by potentially 50% or more.
Persistently high humidity over the past week severely limits the evaporative gradient needed to draw moisture from the rock interior.
Mid-summer temperatures provide reasonable thermal energy for evaporation, which is the main positive factor in the current conditions.
Winds of 15–17 km/h from the west would help a west-facing crag, but the sheltered valley position means the effective wind at the rock face is considerably less.
Recommendations
3
- Do not climb today or tomorrow — allow a minimum of 48 hours of dry weather from today's rain before considering a visit.
- If visiting on August 11, perform thorough touch tests on the rock and check the base of the crag for damp ground; if the soil is moist, the rock is still wet internally.
- Check the BMC RAD for any active bird nesting restrictions before travelling to Back Bowden Doors.
Do Not Climb
35%
6 days ago
Back Bowden Doors has had a troublesome recent weather pattern: 6.6mm on August 4th, 2.6mm on August 6th, and trace precipitation today (0.2mm), with only one fully dry day (August 7th) since the last significant rain. The sheltered valley position and high average humidity (79%) mean the porous Fell Sandstone is very unlikely to have dried adequately — do not climb today.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley setting and partial tree cover significantly reduce airflow at the rock surface, meaning drying times here are substantially longer than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems and overhanging features can weep from above for days after rain, with seepage fed by the 30.3mm deluge on July 26th and subsequent showers still potentially contributing to internal moisture.
- The west-facing aspect receives only afternoon and evening sun, which limits the total solar drying hours compared to a south-facing crag.
- Seasonal bird nesting restrictions may apply — check the BMC RAD before visiting, as the crag is within an SSSI with potential access limitations.
Warnings
2
- Climbing on damp Fell Sandstone causes permanent, irreversible damage to holds and routes — the SSSI-designated rock is irreplaceable.
- The surface of the sandstone can appear dry while the interior remains saturated; do not rely on visual or touch assessment of the face alone.
Reasoning
With 2.6mm on August 6th, trace rain on August 5th and today, and only one clear dry day (August 7th), internal moisture levels in this high-porosity Fell Sandstone are almost certainly still elevated despite the surface possibly appearing dry.
Although westerly and south-westerly winds of 20–40 km/h have been present, the sheltered valley position greatly reduces effective wind speed at the crag face, and the single fully dry day since the last 2.6mm event is insufficient for confident drying of porous sandstone.
The cumulative moisture loading from repeated rain events (30.3mm on July 26th, 2.7mm on July 28th, 1.8mm on July 31st, 6.6mm on August 4th, 2.6mm on August 6th) means the rock has rarely had a chance to dry out fully, elevating the risk of hold breakage and grain loosening on the iron-oxide-cemented features.
Summer temperatures (~15–20°C) aid evaporation, but the persistent humidity averaging 79% over the past week significantly slows the drying rate, negating much of the seasonal advantage.
Contributing Factors
6
Multiple rain events over the past two weeks (30.3mm on Jul 26, 6.6mm on Aug 4, 2.6mm on Aug 6, 0.2mm today) have kept the rock in a near-continuous state of moisture loading.
The wooded, sheltered valley dramatically reduces effective wind exposure at the rock face, extending drying times well beyond what the recorded regional wind speeds would suggest.
Average humidity of 79% over the past week severely limits evaporative drying, as the moisture gradient between rock surface and air is small.
The west-facing orientation receives only afternoon/evening sun, providing fewer total hours of direct solar heating compared to south-facing crags.
Temperatures of 15–20°C provide reasonable evaporative potential, which is the one favourable factor in an otherwise poor drying picture.
Regional wind speeds of 20–40 km/h from the SW/W would normally aid drying, but the sheltered position means the crag receives only a fraction of this airflow.
Recommendations
3
- Do not climb today — the rock has had insufficient drying time since the 2.6mm rain on August 6th and trace precipitation today, especially given the sheltered setting.
- If conditions remain dry from tomorrow, the earliest reasonable window to assess conditions on-site would be August 11th or 12th, provided no further rain falls.
- Check the ground at the base of the crag before touching the rock — if the soil is damp, the sandstone is certainly still holding internal moisture.
Do Not Climb
35%
7 days ago
Back Bowden Doors received 2.6mm of rain yesterday (Aug 6) and light precipitation on several recent days, with only one full dry day since. Given the sheltered valley position, high humidity, and porous Fell Sandstone, the rock is very likely still damp internally despite today's dry weather. We recommend waiting.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and wooded surroundings trap humid air and significantly slow drying compared to the exposed hilltop at Bowden Doors proper — expect at least an extra day of drying time beyond normal guidelines.
- The powerful roof problems are known to weep from above after rain, and the 30.3mm event on July 26 followed by repeated lighter showers means seepage lines may still be active on overhanging features.
- The west-facing aspect receives only afternoon and evening sun, which combined with the sheltered setting limits solar-driven evaporation during peak drying hours.
- Seasonal bird nesting restrictions may still be in effect in early August — check the BMC RAD before visiting.
Warnings
2
- Do not climb today — only one dry day since 2.6mm of rain is far too soon for sheltered Fell Sandstone.
- The 30.3mm event on July 26 and repeated subsequent showers mean deep internal moisture may still be present — surface dryness is not a reliable indicator.
Reasoning
The crag received 2.6mm on Aug 6, 0.3mm on Aug 5, 6.6mm on Aug 4, and 0.4mm on Aug 3 — a cumulative ~10mm over four days with only one dry day since, meaning the rock is almost certainly still holding significant internal moisture.
Today's SW wind at 23 km/h and 72% humidity provide moderate drying, but a single dry day is wholly insufficient for a sheltered, wooded Fell Sandstone crag that has seen repeated wetting over the past week.
With recent repeated wetting events and the heavy 30.3mm downpour on July 26 still within the last two weeks, internal moisture levels are likely elevated, increasing the risk of hold breakage on the iron-oxide-cemented features climbers depend on.
Summer temperatures (~14–18°C recently) are adequate for drying but the persistent humidity averaging 79% over the last week and the sheltered aspect limit evaporative potential despite the season.
Contributing Factors
6
The crag received rain on four of the last five days (Aug 3–6, totalling ~10mm), leaving only one dry day before today.
The wooded, sheltered valley traps moisture and limits airflow, significantly prolonging drying times compared to exposed crags.
Average humidity of 79% over the past week severely limits net evaporation from the rock surface.
Today's 23 km/h SW wind helps surface drying, though the sheltered position reduces effective wind speed at the crag face.
The west-facing aspect receives only afternoon and evening sun, providing moderate but not optimal solar drying.
Temperatures in the mid-to-high teens support some evaporative drying, though below the seasonal average for July/August.
Recommendations
3
- Wait at least 48–72 hours of dry weather from the last rain (Aug 6) before visiting — the earliest reasonable window is Aug 9, but forecast rain that day resets the clock.
- Monitor the forecast closely: if the 5mm forecast for Aug 9 materialises, do not visit until at least Aug 12 after two full dry days with wind.
- If you do visit later in the window, check the base of the crag — if the ground is damp or the roofs are weeping, the rock is still too wet to climb safely.
Do Not Climb
70%
9 days ago
Rain fell early this morning (2.1mm total today) on top of a persistently damp recent period including 6.6mm on Aug 4 and scattered light precipitation on several preceding days; the sheltered valley position and high ambient humidity mean the porous Fell Sandstone will not have had adequate drying time. Do not climb today — wait for at least 48 hours of dry, breezy weather to allow internal moisture to dissipate.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Back Bowden Doors sits in a sheltered wooded valley that traps humid air and dramatically slows drying compared to the exposed hilltop of Bowden Doors proper — add at least 24 hours to standard drying estimates.
- The powerful roof problems and overhanging sections are known to weep from above after rain, as water percolates through the cap rock and seeps through cracks, remaining wet long after vertical faces appear dry.
- The west-facing aspect receives only afternoon and evening sun, which limits the daily solar drying window — combined with the sheltered position, effective drying hours are few.
- Recent precipitation has been frequent and cumulative (45.6mm in 28 days, 11.5mm in 7 days) with no extended dry spell, meaning background moisture levels in the rock are elevated beyond what a single dry day can resolve.
Warnings
2
- Climbing on damp Fell Sandstone causes permanent, irreversible damage to holds — the iron-oxide cemented features that define Back Bowden's routes are especially fragile when wet.
- Roof problems are known to weep from above after rain; even if the climbing surface feels dry, check for drips and dark patches overhead before pulling on.
Reasoning
Rain fell in the early hours of today (2.1mm) following 6.6mm on Aug 4 and light precipitation on Aug 3 and Aug 5, leaving the rock almost certainly saturated internally despite any surface drying later today.
Although westerly winds have been moderate (31 km/h today), the sheltered valley position means little of that wind reaches the rock face, and with humidity averaging 78% over the past week the evaporative demand has been low — meaningful drying has barely begun since this morning's rain.
With cumulative recent wetting and no extended dry period, internal moisture levels are likely above the critical threshold where significant compressive strength loss occurs, making hold breakage a real risk on the iron-oxide-cemented features.
Mid-summer temperatures (~16°C) are adequate for drying but the persistent cloud cover and elevated humidity characteristic of this unsettled spell are limiting evaporation rates well below summer norms.
Contributing Factors
7
2.1mm of rain fell between midnight and 4am today, directly wetting the rock surface and resetting the drying clock.
11.5mm in the past 7 days across multiple events (including 6.6mm on Aug 4) means the rock has had no chance to dry out fully between wettings.
The wooded, sheltered setting traps humid air and blocks wind from reaching the rock face, significantly slowing evaporation.
Average humidity of 78% over the past week reduces the evaporative gradient, slowing moisture loss from the rock.
Sustained SW winds of 21–28 km/h are forecast for the next few days, which will aid drying once the rain stops — though sheltering limits the benefit at the crag.
No precipitation is forecast for the next 5+ days, providing a window for the rock to dry if humidity cooperates.
The west-facing aspect only receives afternoon/evening sun, limiting the hours of direct solar heating that drive evaporation.
Recommendations
3
- Do not climb today — rain fell this morning and the rock is wet; wait at least 48 hours of continuous dry weather before visiting.
- Check the base of the crag on arrival: if the ground is still moist (not sandy-dry), the rock almost certainly retains damaging internal moisture.
- Prioritise a visit from Saturday Aug 8 onwards, checking overhead seepage on the roof problems before committing — the overhangs are the last features to stop weeping.
Do Not Climb
95%
11 days ago
Back Bowden Doors is currently wet and unsuitable for climbing. Today has already received 6.2mm of rain (with more falling through the early afternoon), and the forecast shows further rain tomorrow (4.5mm) and intermittent showers through the week — the sheltered valley position means the porous Fell Sandstone will not get the sustained dry period it needs to dry out safely.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and wooded surroundings significantly impede airflow and sun exposure, meaning drying takes considerably longer here than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems are known to weep from above after rain, and the 30.3mm event on July 26th followed by repeated smaller showers means deep moisture is likely still present in the rock mass.
- West-facing aspect receives only evening sun, which combined with the sheltered setting and persistent 77–90% humidity levels provides minimal drying drive.
- Cumulative precipitation of 42.9mm over the last 28 days — including a very heavy 30.3mm event on July 26th — means the rock has been subjected to repeated wetting cycles with insufficient drying between them.
Warnings
3
- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds — the iron oxide features that define routes here will not regenerate once broken.
- The rock surface may appear to dry before the interior does; do not be deceived by a dry-looking surface in the sheltered valley — check the ground at the crag base and feel for coolness in the rock.
- Roof problems are known to weep from above after rain and may drip unexpectedly even when the main face appears dry.
Reasoning
The rock is almost certainly saturated internally: 6.2mm fell today with heavy showers through midday, on top of repeated wetting events over recent weeks including 30.3mm on July 26th and 2.7mm on July 28th, with no sustained dry spell since.
Despite some dry days between showers, the sheltered valley position, west aspect (evening sun only), and consistently high humidity (77% average over the last week) have severely limited evaporative drying — the brief dry windows have been wholly insufficient to dry porous Fell Sandstone after repeated soakings.
With the rock likely at high internal saturation from cumulative wetting, climbing would risk significant hold breakage and grain loosening — Fell Sandstone loses up to 50% of its compressive strength when wet, and the iron oxide holds are particularly vulnerable.
Summer temperatures are adequate for drying in principle, but the current unsettled pattern with frequent showers and high humidity is negating the seasonal advantage.
Contributing Factors
7
6.2mm has fallen today including 2.5mm as recently as 1pm, ensuring the rock surface and interior are thoroughly wet.
A 30.3mm deluge on July 26th deeply saturated the rock, and subsequent smaller showers (2.7mm on the 28th, 1.8mm on the 31st, intermittent trace amounts since) have prevented meaningful drying.
The wooded, sheltered valley setting drastically reduces airflow across the rock face, which is the single most important factor for drying porous sandstone.
Humidity has averaged 77% over the past week and hit 90% today, severely limiting the evaporative gradient needed to draw moisture from the rock.
4.5mm is forecast for tomorrow and a further 4.1mm across the following four days, meaning no sustained dry period is in sight.
Temperatures in the mid-to-high teens provide reasonable thermal energy for evaporation, though this advantage is negated by humidity and ongoing precipitation.
Some days have seen 20–30 km/h winds which would aid surface drying, but the sheltered valley position means the crag itself sees much less of this.
Recommendations
3
- Do not climb at Back Bowden Doors today or in the coming days — the rock is wet and internally saturated, and further rain is forecast.
- Monitor conditions for a sustained dry window of at least 48–72 hours with low humidity before considering a visit; given the sheltered position, err toward the longer end.
- If visiting the Northumberland area this week, consider non-porous alternatives such as the Whin Sill crags (e.g. Crag Lough, Peel Crag) which are dolerite and handle moisture far better, though still check for surface slipperiness.
Do Not Climb
90%
12 days ago
Back Bowden Doors is currently wet and unsuitable for climbing. Light but persistent rain today (1.8mm across multiple hours) follows recent significant rainfall including 30.3mm on July 26 and 2.7mm on July 28, and the forecast shows 9.6mm arriving tomorrow with further rain on each of the next four days — there will be no adequate drying window this week.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and surrounding woodland dramatically slow drying compared to the exposed hilltop at Bowden Doors proper; expect conditions here to lag by at least an extra day or two.
- The powerful roof problems and overhanging sections are known to weep from above after rain, and the 30.3mm deluge on July 26 combined with subsequent smaller showers means seepage lines may still be active.
- Sustained NE and E winds over recent weeks offered little drying benefit on the west-facing rock, and even the recent W/SW winds are partially blocked by the sheltered valley setting.
- Humidity has been persistently high (averaging 76% over the last week, 88% today) which severely limits evaporative drying of porous Fell Sandstone even in mid-summer.
Warnings
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- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds and routes — the rock loses up to 50% of its compressive strength when saturated.
- The surface may appear dry in sheltered overhanging sections while the interior remains dangerously weakened; do not be deceived by surface appearance.
- The roof problems are known to weep from above after rain — even if the climbing surface looks dry, water may be actively moving through the rock.
Reasoning
The rock is almost certainly still holding significant internal moisture from the 30.3mm event on July 26, compounded by 2.7mm on July 28, 1.8mm on July 31, 0.3mm on August 1, and ongoing light rain today — the Fell Sandstone has not had a sufficient continuous dry spell to dry out.
Despite some westerly wind in recent days, the sheltered valley position limits airflow across the rock face, humidity has remained high (66–88%), and the intermittent showers have repeatedly re-wetted the surface before any meaningful drying could occur.
With repeated wetting events and no sustained drying period, the porous Fell Sandstone is likely at or near the critical moisture levels where 80% of compressive strength loss occurs, making hold breakage and grain loosening a serious risk.
Summer temperatures (15–20°C) would normally support drying, but the persistently cloudy, humid, and showery pattern has negated the seasonal advantage, and the west aspect receives only evening sun which is largely blocked by cloud cover.
Contributing Factors
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30.3mm fell on July 26, a very heavy event for porous Fell Sandstone, and the rock has not had the required 48–72+ hours of continuous dry, warm weather since.
1.8mm of intermittent showers today, including rain through the morning hours, is re-wetting the rock surface and resetting any drying progress.
Showers on July 28 (2.7mm), July 31 (1.8mm), August 1 (0.3mm), and today have prevented any sustained drying since the heavy July 26 event.
The wooded, sheltered valley setting significantly reduces wind exposure across the rock face, slowing evaporative drying despite moderate regional wind speeds.
Humidity has averaged 76% over the past week and is 88% today, severely limiting net evaporation from the porous sandstone.
9.6mm forecast for August 4 with further rain on each subsequent day through August 8 means no drying window is available in the coming week.
Temperatures of 15–20°C are warm enough to support drying in principle, but this advantage is entirely negated by the persistent moisture and humidity.
Recommendations
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- Do not climb at Back Bowden Doors today or in the coming week — the rock is wet and the forecast offers no adequate drying window.
- Monitor conditions beyond August 9; you will need at least 48–72 hours of dry, breezy weather before considering a visit.
- If visiting the Northumberland area, consider non-sandstone alternatives or indoor climbing until the weather pattern breaks.
Climbing Outlook